Footwear upper



FIG. 1 is a front perspective view of a footwear upper showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is an opposite side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dot-dot-dash broken lines depict the bounds of the claim and form no part of the claimed design. The even dashed broken lines depict the footwear sole, which forms no part of the claimed design. 

CLAIM The ornamental design for a footwear upper, as shown and described. 